KAT2B and infection: The 7 regions suggestively associated (as defined above) with intermittent carriage include a genome-wide significant finding on chromosome 3 at rs61440199 (p value 8.68 x 10−9) that is intronic to KAT2B (lysine acetyltransferase 2B) (also known as PCAF; p300/CBP-associated factor), a gene associated with post-traumatic stress disorder [66], mean arterial blood pressure [67], adipogenesis [68], development of T regulatory cells [69], and recently shown to be a potential regulator of inflammatory responses following infection with S. aureus in a mouse model of disease (Table 2) [70].